:proc:

:singleton_method: 
:instance_method: 
  :[*arg]: [NilClass]
  :call: [NilClass]
  :===: [NilClass]

  :arity: [Fixnum]
  :binding: [Binding]
  :curry: [Proc]
  :hash: [Integer]
  :to_s: [String]
  :inspect: [String]
  :lambda?: [TrueClass,FalseClass]
  :parameters: [Array]
  :source_location: [Array,NilClass]
  :to_proc: [Proc]